I’m in the process of updating thebuddhaswords.net with Ajahn @Brahmali’s great translations of the Vinaya and am coming across this situation often. The Nissaggiya Pācittiyas were a challenge as there is not a direct correlation with the bhikkhu’s rules. (e.g bi-vb-np13=bu-vb-np1 etc).
I’ve now started the Sekhiyas (which do appear to have a direct correlation to the monks Sekhiya rules but the navigation to them on Sutta Central is difficult as there are no links to the corresponding bhikkhu rules. The “parallel” (circled in the image below for the bhikkhuni Sekhiya 2) is not a hyperlink as I’d expect.
I’ve added notes on my site to the affect that the bhikkhuni NP13 is the bhikkhu’s NP1 but, so that I know how to treat them, with the Sekhiyas, is there such a thing a the “bhikkhuni sekhiyas” or have they been adopted by the bhikkhunis?